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When Louis picks the offer of vampirism to pull himself out of his funk, he immediately regrets it.

Some of the world's deadliest bacteria seek out and feed on human blood, a newly-discovered phenomenon researchers are calling "bacterial vampirism."

Many of such binaries will at some point transfer mass from one star to another, a kind of stellar vampirism depicted in this artist’s impression.

When Jonathan comes under the count's spell and begins slipping into vampirism, it is Mina who must rescue him and join the hunt for Dracula in England.

He doesn't let anything get in the way of a flamboyant good time – not even his vampirism.